GCF/LCM REVIEW

What is the least common multiple (LCM) of 3 and 20?

• 60
• 40
• 20
• 3

Tags

CCSS.6.NS.B.4

What is the least common multiple (LCM) of 8 and 5?

• 50
• 40
• 5
• 8

Tags

CCSS.6.NS.B.4

Choose the correct list of the first five multiples of 6.

• 6, 12, 18, 32, 36

• 6, 14, 22, 28, 34

• 6, 12, 18, 24, 30

• 1, 6, 12, 18, 24

If Juanita runs every third day and swims every fifth day, what is the first day that she will both run and swim again? 

• 5
• 15
• 45
• 30

Tags

CCSS.6.NS.B.4

What is the greatest common factor of 6 and 21?

• 6
• 2
• 3
• 7

Tags

CCSS.6.NS.B.4

GCF of 20 and 70

• 2
• 5
• 7
• 10

Tags

CCSS.6.NS.B.4

GCF of 99 and 54

• 9
• 3
• 6
• 8

Tags

CCSS.6.NS.B.4

Sara had 16 red flowers and 24 yellow flowers.  She wants to make bouquets with the same number of each color flower in each bouquet.  What is the greatest number of bouquets that she can make?

• 4
• 2
• 48
• 8

Tags

CCSS.6.NS.B.4

Use a number tree to find the prime factorization of 48

• 4x2x6
• 4x2²x3
• 3x2⁴
• 12x4

Tags

CCSS.4.OA.B.4

Find the least common multiple (LCM) of 10 and 20.

• 5

• 10

• 20

• 40

Tags

CCSS.6.NS.B.4